Contextualist treatments of clashes of intuitions can allow that two apparently conflicting claims can both be true. But making true claims is far from the only thing that matters-there are often substantive normative questions about what contextual parameters are appropriate to a given conversational situation. This paper foregrounds the importance of the social power to set contextual standards and how it relates to injustice and oppression, introducing a phenomenon I call "contextual injustice," which has to do with the unjust manipulation of conversational parameters in context-sensitive discourse. My central example applies contextualism about knowledge ascriptions to questions about knowledge regarding sexual assault allegations, but I will also discuss parallel dynamics in other examples of context-sensitive language involving politically significant terms, including gender terms. The discussion further illustrates some of the deep connections between language, epistemology, and social justice.